openresty/patches/patch.2016.write2.txt

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--- src/os/unix/ngx_files.c
+++ src/os/unix/ngx_files.c
@@ -183,6 +183,12 @@ ngx_write_chain_to_file(ngx_file_t *file
/* create the iovec and coalesce the neighbouring bufs */
while (cl && vec.nelts < IOV_MAX) {
+
+ if (ngx_buf_special(cl->buf)) {
+ cl = cl->next;
+ continue;
+ }
+
if (prev == cl->buf->pos) {
iov->iov_len += cl->buf->last - cl->buf->pos;